The Colourful World IN ONE SHOT with ABHISHEK K R B.Tech - Aerospace, Alliance University CBSE Expert | Inventor of RocketPro 6+ Years Teaching Exp | Mentored more than 5000 students Helped 1000s of students get 10 CGPA in CBSE X
COLOURFUL WORLD Refraction through a Prism Dispersion through a Prism TIR & Rainbow formation Atmospheric Refraction & its applications Scattering of Light
COLOURFUL WORLD Refraction through a Prism Dispersion through a Prism TIR & Rainbow formation Atmospheric Refraction & its applications Scattering of Light
Q10. Two lenses have power of +2D and -6D respectively. Calculate the focal length of the combination? Answer : -0.25 m
Source: https://www.oswaalbooks.com/download/freeresources/class10/843Oswaal%20CBSE%20Mind%20Maps,%20Science%20Class-10.pdf
Refraction through a Prism
Refraction through a prism Air normal
Refraction through a prism Air normal After the 2nd refraction the emergent ray deviates downwards
Angle of Deviation <D Angle of deviation
As the Refractive index μ of the material increases the ∠D also increases. blue glass μ = 1.5 Red ruby μ = 1.76
Angle of the prism (∠A) Angle between the inclined faces of the prism Angle of deviation (∠D) Angle between the incident and the emergent ray ∠D increases with increase in μ
Q1. In a prism light undergoes _______ at the two slant surfaces A B Refraction Dispersion C D Reflection None of these
Q1. In a prism light undergoes _______ at the two slant surfaces A B Refraction Dispersion C D Reflection None of these
Q2. The angle between two plane refracting surfaces of the prism is called the angle of A B Prism Emergence C D deviation incidence
Q2. The angle between two plane refracting surfaces of the prism is called the angle of A B Prism Emergence C D deviation incidence
DISPERSION THROUGH A PRISM
DISPERSION THROUGH A PRISM Process of splitting of white light into its component colours.
Red Violet Different colors refract differently ● Violet deviates the most ● Red deviates the least
Wavelength (λ) Speed of light Refraction
When light passes through the second prism the colours combine to form White light
Dispersion is the process of splitting white light into its component colours. Two prisms in opposite orientation can negate dispersion.
Q3. A beam of white light enters a prism and splits into rays of all its component colours. Three of the emergent rays are shown below. Which of the following could be the correct sequence of colours for rays A, B and C
Q3. A beam of white light enters a prism and splits into rays of all its component colours. Three of the emergent rays are shown below. Which of the following could be the correct sequence of colours for rays A, B and C A B A-orange, B-blue, C- A-violet, B-yellow, C- violet red C D A-red, B-indigo, C- A-indigo, B-orange, blue C-red
Q3. A beam of white light enters a prism and splits into rays of all its component colours. Three of the emergent rays are shown below.Which of the following could be the correct sequence of colours for rays A, B and C A B A-orange, B-blue, C- A-violet, B-yellow, C- violet red C D A-red, B-indigo, C- A-indigo, B-orange, blue C-red
Q4. A prism splits a beam of white light into its constituent colours. This is so because ________ of different colours is different A B Energy Velocity C D amplitude phase
Q4. A prism splits a beam of white light into its constituent colours. This is so because ________ of different colours is different A B Energy Velocity C D amplitude phase
Total internal Reflection
RAINBOW FORMATION
Rainbow Formation 3 - Step Process
Rainbow Formation 3 - Step Process Refraction / Dispersion
Rainbow Formation 3 - Step Process Refraction / Dispersion Total Internal Reflection
Rainbow Formation 3 - Step Process Refraction / Dispersion Total Refraction Internal Reflection
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